Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 896 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) still clear water
2. 2.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
3. 3.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) two small mirrors (c) an empty juice carton (d) sticky tape
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
9. 9.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a pencil (d) a magnet
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same carton (c) the angle of the mirrors
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same carton (c) the angle of the mirrors (d) how clear the view is
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
15. 15.True or false: black cloth reflects light poorly. (a) True (b) False
16. 16.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
18. 18.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
20. 20.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) aluminium foil (d) a dull brick
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
27. 27.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) a shiny steel plate
28. 28.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
29. 29.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) a battery cell (d) sticky tape
30. 30.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a mirror (d) a rough wooden board
31. 31.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) aluminium foil (d) black cloth
32. 32.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) aluminium foil (d) a mirror
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a pencil (d) a ruler
34. 34.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) turmeric powder (d) sticky tape
36. 36.True or false: a pencil is needed for the periscope. (a) True (b) False
37. 37.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is
40. 40.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a balloon (d) an empty juice carton

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